Tissue graft anchoring

a technology of tissue grafts and grafts, applied in the field of tissue graft anchoring, to achieve the effect of reducing the distance between a graft fixation member and a tendon, increasing the graft/channel interface, and reducing the distance between the graft fixation member and the tendon structur

Active Publication Date: 2015-04-23
SMITH & NEPHEW INC
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  • Abstract
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AI Technical Summary

Benefits of technology

This patent text describes a method and device for securing a tissue graft to a femoral fixation member during cruciate repair. The method involves using a fixation member with two openings and a suture tied thereto, which allows for adjustment of the suture length between the fixation member and the tissue graft. The device includes a fixation member with two openings and a suture tied to it, which allows for interconnection of two suture loops. The technical effects include increased graft / channel interface and reduced fixation member flipping constraints, leading to a more secure and efficient repair.

Problems solved by technology

The ability to minimize this distance is generally limited by fixation member flipping constraints, which results in less tendon in the femoral channel, or leads to making compromises in the size of the graft fixation member to accommodate the tendon and the flipping of the graft fixation member.

Method used

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Embodiment Construction

[0014]Referring to FIGS. 1A and 1B, a knee joint has a tissue graft 10 (e.g., a patellar tendon graft (FIG. 1A) or a semitendonosis and gracilis graft (FIG. 1B)) implanted in an anterior cruciate ligament (ACL) repair and reconstruction procedure. Prior to implanting tissue graft 10, a notchplasty procedure is preferably performed to expand the intercondylar notch 12 of the femur bone. A femoral channel 14 for receiving one end of tissue graft 10 is then drilled from notch 12 a predetermined distance within the femur with a passing channel 16 of reduced diameter drilled further through the femur from femoral channel 14 to a region of femoral cortex 18. A tibial channel 20 for receiving the other end of tissue graft 10 is drilled from an anterior region of the tibia to a region near the opening of femoral channel 14.

[0015]In the case of patellar tendon graft, one end of tissue graft 10 includes a bone block 22 which is shaped and sized in close conformity with femoral channel 14 to e...

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Abstract

A fixation device includes a member defining at least two openings, and a suture tied to the member by passing the suture through the at least two openings in the member to form two suture loops through which ends of the suture pass. The two suture loops are interconnected. A method of securing a tissue graft includes providing the fixation member, attaching the suture to a tissue graft, and adjusting the length of the suture between the fixation member and the tissue graft by pulling.

Description

BACKGROUND[0001]An anterior cruciate ligament (ACL) that has ruptured and is non-repairable is generally replaced arthroscopically by a tissue graft. The tissue graft can be harvested from a portion of a patellar tendon having so called “bone blocks” at each end, and from the semitendonosis and gracilis. Alternatively, the tissue graft can be formed from synthetic materials or from a combination of synthetic and natural materials.SUMMARY[0002]To increase the graft / channel interface in femoral fixation for cruciate repair the distance between a graft fixation member and the tendon construct is reduced. The ability to minimize this distance is generally limited by fixation member flipping constraints, which results in less tendon in the femoral channel, or leads to making compromises in the size of the graft fixation member to accommodate the tendon and the flipping of the graft fixation member.[0003]According to one aspect, a method of securing a tissue graft includes providing a fix...

Claims

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Application Information

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IPC IPC(8): A61B17/04
CPCA61B17/0401A61F2/0811A61B2017/0459A61B2017/0414A61F2002/0882A61F2002/0852A61B2017/0404A61B17/04
InventorPERRIELLO, MICHAEL JAMESBERUBE, ALFRED RODRIGUEFERRAGAMO, MICHAEL CHARLES
OwnerSMITH & NEPHEW INC